User Manual

Signal Connections 21
17,51 GPTC<0,1>_GATE DGND Input
Gate of
GPTC<0,1>
18,52 GPTC<0,1>_OUT DGND Input
Output of
GPTC<0,1>
19,53 GPTC<0,1>_UPDOWN DGND Input
Up/Down of
GPTC<0,1>
20 EXTTIMEBASE DGND Input
External TIME-
BASE
21,28,49,50,54,62 DGND -------- -------- Digital ground
22,56,23,57,24,58,25,59 PB<7,0> DGND PIO*
Programmable
DIO pins of 8255
Port B
26,60,27,61,29,63,30,64 PC<7,0> DGND PIO*
Programmable
DIO pins of 8255
Port C
31,65,32,66,33,67,34,68 PA<7,0> DGND PIO*
Programmable
DIO pins of 8255
Port A
35~38 CH<0..3>- -------- Input
Differential nega-
tive input for AI
channel <0..3>
39 AIGND -------- --------
Analog ground
for AI
40~42 AOGND -------- --------
Analog ground
for AO
43~46
SDI<3..0>_0 (2010)
NC (2005/2006/2016)
DGND Input
Synchronous dig-
ital inputs
47 EXTWFTRIG DGND Input
External AO
waveform
trigger
48 EXTDTRIG DGND Input
External AI digital
trigger
55 AFI0 DGND Input
Auxiliary Func-
tion Input 0
(ADCONV,
AD_START)
Pin # Signal Name Reference Direction Description
Table 3-2: 68-pin VHDCI-type Connector Legend